<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>localStorage</title>
</head>
<body>
    <h2>localStrorage</h2>
    <button onclick="saveData()">点我保存一个数据</button>
    <button onclick="readData()">点我读取一个数据</button>
    <button onclick="deleteData()">点我删除一个数据</button>
    <button onclick="deleteAllData()">点我清空一个数据</button>
</body>
<script>
    let p = {name:'张三',age:18};
    function saveData(){
        localStorage.setItem('msg','hello')
        localStorage.setItem('msg2',666)
        localStorage.setItem('person',JSON.stringify(p))
    };
    function readData(){
        console.log(localStorage.getItem('msg'));
        console.log(localStorage.getItem('msg2'));

        const result = localStorage.getItem('person')
        console.log(JSON.parse(result))
    };
    function deleteData(){
        localStorage.removeItem('msg2')
    };
    function deleteAllData(){
        localStorage.clear()
    }
</script>
</html>